Task 1

Take a look at the table below.

Pick three animals from the Animal Lifespan data we haven’t talked about yet.

Assign the lifespan values to single objects with appropriate names.

Task 2

Create three (different) logical tests which compare the maximum longevity between your chosen animal lifespans.

Does the output you get make sense?

Task 3

Create two vectors with the help of c():

1. strings (i.e. texts) of all the animals you chose
2. the respective lifespan values (in the same order)

Task 4

Calculate the mean of your lifespan vector.

Task 5

5.1 Retrieve the second value of the vector that contains your animal names.

Tip: Square brackets are your friend.

5.2 Using code, find out which animals in your lifespans vector have a maximum longevity of above 25.

Tip: For an elegant solution you need to use both vectors, square brackets and a logical test. If you need help revisit Indexing with logical tests

Task 6

Calculate the animal to human conversion ratios for the animals you’ve picked and assign the results to an object.

Task 7

Calculate the human years for your picked animals and assume they are all 5 years old.

Task 8

Pick one of the animals you chose and create a function which takes as input animal years and outputs human years. Test the function and validate with results from the seventh exercise.

You can name the function in this style:

[you_animal_name]_to_human_years

Tip: If you need help revisit the section Dog to Human years function

Create the function here:

Try it out here: